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发明名称
Paper clip device
摘要
申请公布号
US2838817(A)
申请公布日期
1958.06.17
申请号
US19560577167
申请日期
1956.04.09
申请人
WILLS DAVID V
发明人
WILLS DAVID V.
分类号
B42F1/08
主分类号
B42F1/08
代理机构
代理人
主权项
地址
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